Games like Horizon
Games like Horizon include Stellaris, Sid Meier's Civilization®: Beyond Earth™, Sid Meier’s Civilization® VI, ENDLESS Space™ 2, and ENDLESS Space™ - Definitive Edition. We matched them by the tags players give Horizon on Steam (Strategy, Grand Strategy, Space, 4X, and Simulation): closest matches first, and among equally close ones the better-known games.
Stellaris
Shared: Strategy · Space · Grand Strategy
Sid Meier's Civilization®: Beyond Earth™
Shared: Strategy · Space · 4X
Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · 4X
ENDLESS Space™ 2
Shared: Strategy · Space · 4X
ENDLESS Space™ - Definitive Edition
Shared: Strategy · Space · 4X
Galactic Civilizations IV
Shared: Grand Strategy · Space · Strategy
X4: Foundations
Shared: Space · Simulation · Strategy
Heroes of Might and Magic: Olden Era
Shared: Strategy · Grand Strategy · Simulation
Sid Meier's Civilization® V
Shared: Strategy · 4X · Grand Strategy
Europa Universalis IV
Shared: Strategy · Grand Strategy · 4X
Master of Orion
Shared: Strategy · Space · 4X
STAR WARS Zero Company™
Shared: Strategy · Sci-fi · Singleplayer
MENACE
Shared: Strategy · Grand Strategy · Turn-Based Strategy
Battle Brothers
Shared: Strategy · Grand Strategy · Turn-Based Strategy
ENDLESS Legend™
Shared: Strategy · 4X · Turn-Based
Age of History II
Shared: Strategy · Grand Strategy · Simulation
FTL: Faster Than Light
Shared: Strategy · Space · Sci-fi
STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Space · Sci-fi
Sid Meier's Civilization VII
Shared: Strategy · Grand Strategy · 4X
Interstellar Space: Genesis
Shared: Strategy · 4X · Space
Kerbal Space Program
Shared: Space · Simulation · Sandbox
Distant Worlds: Universe
Shared: Strategy · Space · 4X
No Man's Sky
Shared: Space · Sci-fi · Exploration
BattleTech
Shared: Strategy · Sci-fi · Turn-Based